| Autor: |
Xu, Hao, Chen, Zhijiao, Liu, Haiwen, Chang, Le, Huang, Taotao, Ye, Sheng, Zhang, Lina, Du, Chao |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Vehicular Technology; Apr2022, Vol. 71 Issue 4, p4449-4453, 5p |
| Abstrakt: |
A single-fed dual-band dielectric resonator antenna (DRA) with orthogonal circular polarizations (CPs) in K- and Ka-bands is proposed for satellite communications on unmanned aerial vehicle (UAV). The antenna overcomes the challenges of dual-band dual-CP operation, narrow axial-ratio bandwidth (ARBW) of single-fed antennas, and limited payload and space of UAVs. A shared-aperture merged-structure technique of DRA and slot-dipole antenna is proposed for dual-band dual-CP radiation, thus enabling full-duplex operation with compact size for high isolation systems. The orthogonal CPs in two frequency bands can be controlled independently by a phase compensation method. Besides, broadened ARBW and enhanced gain are attained from the stacked DR, from which high capacity and reliability communication can be achieved. A prototype operating at right-handed CP (RHCP) in the lower band, whereas left-handed CP (LHCP) in the upper band has been designed and measured. It features 10-dB impedance bandwidths of 6.4% and 12.8%, and 3-dB ARBW of 5.2% and 4.1% in the lower and upper bands, respectively. The antenna provides a low cost solution for high isolation, high throughput, and small payload full-duplex UAV satellite systems. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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